diff options
Diffstat (limited to 'storage/innobase/mysql-test/patches/index_merge_innodb-explain.diff')
| -rw-r--r-- | storage/innobase/mysql-test/patches/index_merge_innodb-explain.diff | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/storage/innobase/mysql-test/patches/index_merge_innodb-explain.diff b/storage/innobase/mysql-test/patches/index_merge_innodb-explain.diff new file mode 100644 index 00000000000..d1ed8afc778 --- /dev/null +++ b/storage/innobase/mysql-test/patches/index_merge_innodb-explain.diff @@ -0,0 +1,31 @@ +InnoDB's estimate for the index cardinality depends on a pseudo random +number generator (it picks up random pages to sample). After an +optimization that was made in r2625 the following EXPLAINs started +returning a different number of rows (3 instead of 4). + +This patch adjusts the result file. + +This patch cannot be proposed to MySQL because the failures occur only +in this tree and do not occur in the standard InnoDB 5.1. Furthermore, +the file index_merge2.inc is used by other engines too. + +--- mysql-test/r/index_merge_innodb.result.orig 2008-09-30 18:32:13.000000000 +0300 ++++ mysql-test/r/index_merge_innodb.result 2008-09-30 18:33:01.000000000 +0300 +@@ -111,7 +111,7 @@ + explain select count(*) from t1 where + key1a = 2 and key1b is null and key2a = 2 and key2b is null; + id select_type table type possible_keys key key_len ref rows Extra +-1 SIMPLE t1 index_merge i1,i2 i1,i2 10,10 NULL 4 Using intersect(i1,i2); Using where; Using index ++1 SIMPLE t1 index_merge i1,i2 i1,i2 10,10 NULL 3 Using intersect(i1,i2); Using where; Using index + select count(*) from t1 where + key1a = 2 and key1b is null and key2a = 2 and key2b is null; + count(*) +@@ -119,7 +119,7 @@ + explain select count(*) from t1 where + key1a = 2 and key1b is null and key3a = 2 and key3b is null; + id select_type table type possible_keys key key_len ref rows Extra +-1 SIMPLE t1 index_merge i1,i3 i1,i3 10,10 NULL 4 Using intersect(i1,i3); Using where; Using index ++1 SIMPLE t1 index_merge i1,i3 i1,i3 10,10 NULL 3 Using intersect(i1,i3); Using where; Using index + select count(*) from t1 where + key1a = 2 and key1b is null and key3a = 2 and key3b is null; + count(*) |